Analysis of package opening easiness abstract opening easiness is the additional function of package that attracts consumers&39 favor. This article presents a detailed analysis of the testing indexes needed in obtaining opening easiness of bag package and bottle package. Key words bag package, bottle package, opening easiness, heat sealing and torque. 1.importance of opening easiness opening easiness, gradually becoming outstanding with the aggravation of market competition, is one of the additional functions of package. How to better thoughtful service to customers has already attracted close attentions of various manufacturers.